Google structured data parser does not handle about='' properly.

Given:

	<!DOCTYPE html>
	<html prefix="..." typeof="s:Blog">
	<head>
	<title property="dc:title">Example</title>
	</head>
	<body>
	<div id="doap" about="#doap" typeof="s:SoftwareApplication doap:Project">
	<a about="" rel="s:blogPost" href="/foo">Foo</a>
	<a rel="doap:release" href="/foo"></a>
	</div>
	</body>
	</html>

the structured data parser will generate:

	rdfa-node
	type:		Blog
	property:
		title:	Example

	rdfa-node
	type:		SoftwareApplication
	relationship:
		name:	blogPost
		value:	Foo
		href:	/foo

		name:	release
		href:	/foo

Therefore, it is not using the about="" property to associate the
s:blogPost item to the s:Blog node.

This change does two things:

   1.  Move the 'News' section outside the #doap block so it gets
       associated with the s:Blog node.

   2.  Split out the doap:release associations from the rest of the
       release markup, keeping the doap:release markup in the #doap
       block.